3 system_mke2fs='/sbin/mke2fs'
4 bbox_mke2fs='./busybox mke2fs'
6 gen_image() { # params: mke2fs_invocation image_name
8 dd seek=$((kilobytes-1)) bs=1K count=1 </dev/zero of=$2 >/dev/null 2>&1 || exit 1
9 $1 -F $2 $kilobytes >$2.raw_out 2>&1 || return 1
11 | grep -v '^mke2fs [0-9]*\.[0-9]*\.[0-9]* ' \
12 | grep -v '^Maximum filesystem' \
13 | grep -v '^Writing inode tables' \
14 | grep -v '^Writing superblocks and filesystem accounting information' \
15 | grep -v '^This filesystem will be automatically checked every' \
16 | grep -v '^180 days, whichever comes first' \
17 | sed 's/blocks* unused./blocks unused/' \
18 | sed 's/block groups*/block groups/' \
20 | sed 's/blocks (.*%) reserved/blocks reserved/' \
26 echo Testing $kilobytes
28 gen_image "$system_mke2fs" image_std || return 1
29 gen_image "$bbox_mke2fs" image_bb || return 1
31 diff -ua image_bb.out image_std.out >image.out.diff || {
36 e2fsck -f -n image_bb >image_bb_e2fsck.out 2>&1 || {
37 echo "e2fsck error on image_bb"
38 cat image_bb_e2fsck.out
45 # kilobytes=60 is the minimal allowed size
50 test $kilobytes = 200 && break
53 # Transition from one block group to two
54 # fails in [8378..8410] range
55 kilobytes=$((1 * 8*1024 - 50))
57 test_mke2fs #|| exit 1
59 test $kilobytes = $((1 * 8*1024 + 300)) && break
62 # Transition from 2 block groups to 3
64 kilobytes=$((2 * 8*1024 - 50))
68 test $kilobytes = $((2 * 8*1024 + 400)) && break
71 # Transition from 3 block groups to 4
72 # fails in [24825..24922] range
73 kilobytes=$((3 * 8*1024 - 50))
75 test_mke2fs #|| exit 1
77 test $kilobytes = $((3 * 8*1024 + 500)) && break
80 # Transition from 4 block groups to 5
82 kilobytes=$((4 * 8*1024 - 50))
86 test $kilobytes = $((4 * 8*1024 + 600)) && break
89 # Transition from 5 block groups to 6
90 # fails in [41230..41391] range
91 kilobytes=$((5 * 8*1024 - 50))
93 test_mke2fs #|| exit 1
95 test $kilobytes = $((5 * 8*1024 + 700)) && break
101 kilobytes=$(( (RANDOM*RANDOM) % 1000000 + 60))
102 test_mke2fs || exit 1